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WorksheetsDNA Structure & Replication Quiz
Total questions: 20
Worksheet time: 13mins
What is the very first step that takes place during DNA replication?
DNA polymerase adds on the nucleotides to the new strand
Ligase "glues" the DNA
Helicase unzips the DNA
Exonuclease cuts out the RNA primers
The 3D structure of DNA is a __________ __________. It is formed of 2 strands twisted together.
alpha helix
triple stranded
single stranded
What does primase do?
Cuts through hydrogen bonds to unzip the DNA
Glues DNA fragments together
Adds on RNA primers (starter flags)
Builds and adds on the nucleotides
What does ligase do?
Cuts through hydrogen bonds to unzip the DNA
Glues DNA fragments together
Adds on RNA primers (starter flags)
Builds and adds on the nucleotides
What does DNA polymerase do?
Cuts through hydrogen bonds to unzip the DNA
Glues DNA fragments together
Adds on RNA primers (starter flags)
Builds and adds on the nucleotides
What does helicase do?
Cuts through hydrogen bonds to unzip the DNA
Glues DNA fragments together
Adds on RNA primers (starter flags)
Builds and adds on the nucleotides
DNA stands for __________?
Ribonucleic acid
Deoxyribonucleic acid
Double Nitrogen acid
Name the nitrogenous bases found in DNA: A, T. G, C
adenosine, thyme, cortisol, guanine
apple, tangerine, guava, carrot
The nitrogen base C always bonds with ____.
B
T
O
G
RNA contains which sugar?
deoxyribose
Ribose
glucose
fructose
What kind of bond is between the sugar and phosphate in DNA?
Ionic
Covalent
Hydrogen
Nitrogen
The very last step in DNA replication is:
to check for any errors and fix them
to add on the nitrogen bases
to cut out all the RNA primers (starter flags)
to unzip the double stranded helix
Many enzymes are involved in DNA replication. Which is the correct order of enzymes involved in DNA replication from beginning to end?
Helicase, primase, DNA polymerase, Exonuclease
Primase, Helicase, DNA polymerase, Ligase
Helicase, Primase, DNA polymerase, Ligase
DNA primase, Helicase, RNA polymerase, Ligase
Which shows the correct complementary DNA strand of ATG?
ATG
TAC
TAG
CGC
Which letter in the picture below depicts the leading strand in DNA replication?
A
C
B
None of the above
Which letter in the picture below depicts the lagging strand in DNA replication?
Letter A since it is copied from 5' to 3'
Letter A since it is copied from 3' to 5'
Letter B since it is copied from 3' to 5
Letter B since it is copied from 5' to 3'
DNA replication puts down nucleotides ______' to _____' direction and is said to be ______________________
5, 3; antiparallel
3, 5; antiparallel
5, 3; parallel
3, 5; parallel
